Category: Nevin Manimala

Chemphyschem. 2024 Jul 18:e202400626. doi: 10.1002/cphc.202400626. Online ahead of print.

ABSTRACT

Self-assembled monolayers (SAMs) are emerging as platform technology for a myriad of applications, yet they still possess varied spatial stability and predictability issues as their properties are heavily dependent on subtle structural features. Reducing entropy within such a system serves as one of many potential solutions to increase order and therefore coherence/precision in measured properties. Here we explore controlled thermal annealing to improve edge disorders in SAMs and significantly reduce data variance. Using both odd- and even-numbered n-alkanethiol SAMs on Au, we observe statistically significant difference in the contact angles between edge and center. Thermal annealing at 40°C significantly narrows differences between edges and centre of the SAM, albeit with significant reduction in the parity dependent odd-even effect. This study provides a pathway to improve SAMs consistency through minimal external perturbation as reflected by the minimization of odd-even effect as SAMs become increasingly ordered.

PMID:39024523 | DOI:10.1002/cphc.202400626

JBRA Assist Reprod. 2024 Jul 8. doi: 10.5935/1518-0557.20240037. Online ahead of print.

ABSTRACT

OBJECTIVE: Women undergoing IVF who have had a previous c-section (CS) have a lower live birth rate than those with a previous vaginal delivery. However, the precise underlying mechanisms need clarification. Does a previous CS affect the pattern of uterine contractility?.

METHODS: Prospective evaluation in patients undergoing frozen blastocyst embryo transfer in medicated endometrial preparation cycles. Twenty patients were included in groups: A/nulliparous. B/previous vaginal delivery. C/ previous CS without a niche, whereas fifteen patients were recruited in group D (CS and a niche). Patients employed estradiol compounds and 800 mg vaginal progesterone. A 3D-scan was performed the transfer-day where uterine contractility/minute was recorded.

RESULTS: Baseline characteristics (age, BMI, smoking, endometrial thickness) were similar. Mean frequency of uterine contractions/minute was similar between groups (1.15, 1.01, 0.92, and 1.21 for groups A, B, C, and D, respectively). There was a slight increase in the number of contractions in patients with a sonographic niche versus controls, not reaching statistical significance (p=0.48). No differences were observed when comparing patients with a previous C-section (regardless of the presence of a niche) to those without a C-section, either nulliparous (p=0.78) or with a previous vaginal delivery (p=0.80). The frequency of uterine contractions was similar between patients who achieved a clinical pregnancy and those who did not (1.19 vs. 1.02 UC/min, p=0.219, respectively).

CONCLUSIONS: Our study found no significant difference in the frequency of uterine contractility between patients with or without a previous C-section or sonographic diagnosed niche. Further investigation is necessary to understand the physiological mechanisms affecting implantation in patients with isthmocele.

PMID:39024503 | DOI:10.5935/1518-0557.20240037

Vertex. 2024 Jul 10;35(164, abr.- jun.):19-32. doi: 10.53680/vertex.v35i164.543.

ABSTRACT

En esta investigación se dimensiona comparativamente la violencia en parejas de estudiantes de nivel universitario de la Argentina y de Ecuador y se explora la asociación con los celos y otras covariables teóricamente relevantes mediante análisis multivariado. Con un diseño de corte transversal se encuestaron 714 estudiantes (528 de la Universidad Nacional de La Plata, Argentina, y 186 de Universidad de Cuenca, Ecuador). Los instrumentos utilizados fueron el Conflict in Adolescents Dating Relationships Inventory, la Multidimensional Jealousy Scale e items ad hoc sobre fidelidad, consumo de sustancias y estrés durante la relación de pareja. Si bien se halló un predominio de la violencia verbal/emocional, el 3,8 % de los participantes alcanzó alto valor en la medida de abuso total cometido y más de la mitad informó haber cometido, por lo menos, un acto violento físico durante la relación índice. En modelo de regresión logística se verificó que la condición de pertenecer al grupo de alta violencia se asoció positiva y significativamente con los factores celos comportamentales, celos cognitivos,estrés y consumo de sustancias, y negativa y significativamente con la edad al comienzo de la relación.

PMID:39024489 | DOI:10.53680/vertex.v35i164.543

Vertex. 2024 Jul 10;35(164, abr.- jun.):40-47. doi: 10.53680/vertex.v35i164.545.

ABSTRACT

OBJETIVO: Este trabajo busca determinar las variables asociadas a las rehospitalizaciones múltiples en una sala de internación de mujeres, del Hospital de Emergencias Psiquiátricas “Torcuato de Alvear” de la Ciudad de Buenos Aires, Argentina. Método: El presente es un estudio analítico, de tipo transversal, en el que se incluyeron consecutivamente 350 pacientes de entre 18 y 65 años, hospitalizadas desde 2013 hasta diciembre de 2017 en la sala de internación de mujeres de dicho hospital. Al momento del alta se recabaron datos sociodemográficos, clínicos y sobre las condiciones de externación de todas las pacientes. Se definió internaciones múltiples al haber tenido 3 o más internaciones previas al momento de la actual internación. Para variables continuas se realizó test t o el análisis de varianza (ANOVA) en casos de distribución normal, y test de Mann- Whitney y Kruskal-Wallis en casos de distribución asimétrica. Las variables cualitativas se analizaron a través del test de chi-cuadrado con corrección de continuidad. La asociación entre variables se evaluó a través de los coeficientes de correlación de Pearson o Spearman según corresponda.

RESULTADOS: Las variables asociadas con reinternaciones múltiples fueron: el diagnóstico de Trastorno Bipolar, encontrarse realizando tratamiento al ingreso, así como la precariedad habitacional, la falta de trabajo y de autonomía económica. Conclusión: Las variables representativas de vulnerabilidad social y económica se asociaron con la utilización de camas de internación psiquiátrica. Son necesarias políticas públicas que permitan interrumpir la relación entre pobreza y patología mental.

PMID:39024487 | DOI:10.53680/vertex.v35i164.545

Vertex. 2024 Jul 10;35(164, abr.- jun.):82-86. doi: 10.53680/vertex.v35i164.550.

ABSTRACT

Aunque se utiliza comúnmente en la práctica clínica, la literatura científica sobre los patrones de prescripción de clozapina en Colombia es escasa. Se realizó un estudio observacional transversal en el servicio ambulatorio de una clínica de referencia en Bogotá, Colombia. Entre 2016 y 2018, se recetó clozapina a 2603 pacientes, principalmente para esquizofrenia y trastornos relacionados, trastorno afectivo bipolar y trastornos depresivos, a una dosis media de 100 mg/día. Después de controlar otras variables, la edad avanzada fue la única variable que explicó el uso de dosis inferiores a 100 mg/día. La clozapina no se utilizó sólo para la esquizofrenia resistente al tratamiento, y se necesitan estudios adicionales para explicar estas diferencias.

PMID:39024483 | DOI:10.53680/vertex.v35i164.550

JMIR Med Educ. 2024 Jul 18;10:e56879. doi: 10.2196/56879.

ABSTRACT

BACKGROUND: Patient safety is a fundamental aspect of health care practice across global health systems. Safe practices, which include incident reporting systems, have proven valuable in preventing the recurrence of safety incidents. However, the accessibility of this tool for health care discipline students is not consistent, limiting their acquisition of competencies. In addition, there is no tools to familiarize students with analyzing safety incidents. Gamification has emerged as an effective strategy in health care education.

OBJECTIVE: This study aims to develop an incident reporting system tailored to the specific needs of health care discipline students, named Safety Incident Report System for Students. Secondary objectives included studying the performance of different groups of students in the use of the platform and training them on the correct procedures for reporting.

METHODS: This was an observational study carried out in 3 phases. Phase 1 consisted of the development of the web-based platform and the incident registration form. For this purpose, systems already developed and in use in Spain were taken as a basis. During phase 2, a total of 223 students in medicine and nursing with clinical internships from universities in Argentina, Brazil, Colombia, Ecuador, and Spain received an introductory seminar and were given access to the platform. Phase 3 ran in parallel and involved evaluation and feedback of the reports received as well as the opportunity to submit the students’ opinion on the process. Descriptive statistics were obtained to gain information about the incidents, and mean comparisons by groups were performed to analyze the scores obtained.

RESULTS: The final form was divided into 9 sections and consisted of 48 questions that allowed for introducing data about the incident, its causes, and proposals for an improvement plan. The platform included a personal dashboard displaying submitted reports, average scores, progression, and score rankings. A total of 105 students participated, submitting 147 reports. Incidents were mainly reported in the hospital setting, with complications of care (87/346, 25.1%) and effects of medication or medical products (82/346, 23.7%) being predominant. The most repeated causes were related confusion, oversight, or distractions (49/147, 33.3%) and absence of process verification (44/147, 29.9%). Statistically significant differences were observed between the mean final scores received by country (P<.001) and sex (P=.006) but not by studies (P=.47). Overall, participants rated the experience of using the Safety Incident Report System for Students positively.

CONCLUSIONS: This study presents an initial adaptation of reporting systems to suit the needs of students, introducing a guided and inspiring framework that has garnered positive acceptance among students. Through this endeavor, a pathway toward a safety culture within the faculty is established. A long-term follow-up would be desirable to check the real benefits of using the tool during education.

TRIAL REGISTRATION: Trial Registration: ClinicalTrials.gov NCT05350345; https://clinicaltrials.gov/study/NCT05350345.

PMID:39024005 | DOI:10.2196/56879

J Med Internet Res. 2024 Jul 18;26:e59468. doi: 10.2196/59468.

ABSTRACT

BACKGROUND: Frailty and sarcopenia are geriatric syndromes of increasing concern and are associated with adverse health outcomes. They are more prevalent among long-term care facility (LTCF) users than among community dwellers. Exercise, especially multicomponent and progressive resistance training, is essential for managing these conditions. However, LTCFs, particularly in rural areas, face challenges in implementing structured exercise programs due to health care professional shortages. Moreover, older adults often become bored with repetitive exercise training and may lose interest over time. The Nintendo Switch Ring Fit Adventure (RFA) exergame is a novel exergame that combines resistance, aerobic, and balance exercises and offers a potential solution by boosting motivation in an immersive manner and reducing staff intervention needs.

OBJECTIVE: We aimed to evaluate the clinical effectiveness of an exergame-based exercise training program delivered via RFA (exergame-RFA) in improving muscle mass and functional performance among older adult LTCF users.

METHODS: This was a randomized controlled trial conducted from August 2022 to September 2023 and involved older adult LTCF users (aged ≥60 y) in rural southern Taiwan. Participants were randomized into an intervention group (exergame-RFA plus standard care) or a control group (standard care alone). The intervention, conducted seated with arm fit skills and trunk control exercises using the RFA, lasted 30 minutes twice weekly over 12 weeks. The primary outcomes measured were the Study of Osteoporotic Fractures index (serving as an indicator of frailty status) and the diagnostic criteria for sarcopenia (appendicular skeletal muscle mass index, handgrip strength, and gait speed). The secondary outcomes included functional performance (box and block test as well as maximum voluntary isometric contraction of the dominant upper extremity), muscle condition (muscle thickness measured using ultrasonography), activities of daily living (Kihon checklist), health-related quality of life (Short Form Health Survey-36), and cognitive function (brain health test). We used an intention-to-treat analysis, incorporating a simple imputation technique in statistical analysis. A mixed ANOVA, with time as a within-participant factor and intervention as a between-participant factor, was used to compare the training effects on outcomes.

RESULTS: We recruited 96 individuals, of whom 60 (62%) underwent randomization. Of these 60 participants, 55 (92%) completed the study. Significant group×time interactions were observed in the intervention group in all primary outcomes (all P<.001, except P=.01 for handgrip strength) and most secondary outcomes, including maximum voluntary isometric contraction of the biceps (P=.004) and triceps brachii (P<.001) muscles, biceps muscle thickness measured using ultrasonography (P<.001), box and block test (P<.001), Kihon checklist (physical function: P=.01, mood status: P=.003, and total: P=.003), and brain health test (P<.001).

CONCLUSIONS: The exergame-RFA intervention significantly improved muscle mass, strength, and functional performance among older adult users of rural LTCFs, offering a novel approach to addressing frailty and sarcopenia.

TRIAL REGISTRATION: ClinicalTrials.gov NCT05360667; https://clinicaltrials.gov/study/NCT05360667.

INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID): RR2-10.3389/fmed.2022.1071409.

PMID:39024000 | DOI:10.2196/59468

Adv Skin Wound Care. 2024 Jul 17. doi: 10.1097/ASW.0000000000000177. Online ahead of print.

ABSTRACT

BACKGROUND: High bacterial burden stalls wound healing and can quickly progress to infection and sepsis in complex, older-adult patients in long-term care (LTC) or skilled nursing facilities (SNFs).

OBJECTIVE: To investigate the outcomes of point-of-care fluorescence (FL) imaging (MolecuLight i:X) of bacterial loads, which are frequently asymptomatic, to inform customized wound treatment plans for patients in LTC/SNFs.

METHODS: In this retrospective pre/postinterventional cohort study, the authors compared the healing and infection-associated outcomes of 167 pressure injuries from 100 Medicare beneficiaries before and after implementation of FL imaging.

RESULTS: Most patient demographics and wound characteristics did not differ significantly between the standard-of-care (SOC; n = 71 wounds) and FL (n = 96 wounds) cohorts. Significantly more wounds (+71.0%) healed by 12 weeks in the FL cohort (38.5%) versus the SoC cohort (22.5%). Wounds in the FL cohort also healed 27.7% faster (-4.8 weeks), on average, and were 1.4 times more likely to heal per Kaplan-Meier survival analysis (hazard ratio = 1.40; 95% CI, 0.90-2.12). Infection-related complications decreased by 75.3% in the FL cohort, and a significant shift from largely systemic to topical antibiotic prescribing was evidenced.

CONCLUSIONS: Fluorescence-imaging-guided management of wounds significantly improved healing and infection outcomes in highly complex and multimorbid patients in LTC/SNFs. Proactive bacterial infection management via local treatments was enabled by earlier, objective detection. These reported outcome improvements are comparable to randomized controlled trials and cohort studies from less compromised, selectively controlled outpatient populations. Fluorescence imaging supports proactive monitoring and management of planktonic and biofilm-encased bacteria, improving patient care in a complex, real-world setting.

PMID:39023985 | DOI:10.1097/ASW.0000000000000177

J Consult Clin Psychol. 2024 Jun;92(6):327-329. doi: 10.1037/ccp0000897.

ABSTRACT

Treatment personalization has evolved into an important zeitgeist in psychotherapy research. To date, such efforts have principally embodied a unidirectional focus on personalizing interventions to the patient. For example, earlier work in this area attempted to determine whether, on average, certain patients with certain characteristics or needs would respond better to one treatment package versus others. To the extent such aggregate “Aptitude × Treatment interactions” emerged, they could help guide overarching treatment selection. More recently, and drawing on technological and statistical advancements (e.g., machine learning, dynamic modeling), predictive algorithms can help determine for which individual patients certain treatment packages (DeRubeis et al., 2014) or specific during-session interventions within them (Fisher & Boswell, 2016) confer the most advantage for clinical improvement. Again, such work can help guide treatment decisions, though now at multiple care points. Although the aforementioned innovations in personalized psychotherapy have been leading-edge, precision care need not remain unidirectional. Rather, it can be complemented by efforts to personalize treatment decisions to the therapist. Namely, we can harness therapist effectiveness data to help ensure that therapists treat the patients they are empirically most equipped to help and use the interventions with which they have had the most empirical success. Such threads have been the focus of our team’s novel, evolving, and multimethod work on improving psychotherapy by leveraging therapists’ own practice-based evidence. (PsycInfo Database Record (c) 2024 APA, all rights reserved).

PMID:39023981 | DOI:10.1037/ccp0000897

Psychol Methods. 2024 Jul 18. doi: 10.1037/met0000681. Online ahead of print.

ABSTRACT

The coefficient of determination, R², also called the explained variance, is often taken as a proportional measure of the relative determination of model on outcome. However, while R² has some attractive statistical properties, its reliance on squared variations (variances) may limit its use as an easily interpretable descriptive statistic of that determination. Here, the properties of this coefficient on the squared scale are discussed and generalized to three relative measures on the original scale. These generalizations can all be expressed as transformations of R², and alternatives can therefore also be calculated by plugging in related estimates, such as the adjusted R². The third coefficient, new for this article, and here termed the CoD_SD (the coefficient of determination in terms of standard deviations), or R_π (R-pi), equals R²/(R²+1-R²). It is argued that this coefficient most usefully captures the relative determination of the model. When the contribution of the error is c times that of the model, the CoD_SD equals 1/(1 + c), while R² equals 1/(1 + c²). (PsycInfo Database Record (c) 2024 APA, all rights reserved).

PMID:39023979 | DOI:10.1037/met0000681